Construction of this new royal palace was commissioned to begin in the year 1893, the project being placed under the direction of French architect Paul Gottereau.

At the request of Queen Marie, the north wing of the palace was completed with the space that would be used to house the maids of honor and adjutants in duplex apartments of sorts.

In 1925, architect Grigore Cerchez began his work on the Cotroceni Palace by adding a living room with a gazebo on the first floor.

Cerchez continued to work on the two adjacent salons on the first floor of the north wing,[3] as well as the Grand Reception Hall that distinguished this part of the building, until 1926.

There were multiple requests for different functions the palace could serve, from the location of the University of Medicine to the headquarters for the National Union of Romanian Students.

"[7]: 137  Finally, on June 18, 1948, the Council of Ministers has decided that the Cotroceni Palace, its "five bodies, 150 rooms, park, the property of the state" would be placed under the administration of the Ministry of Interior.

After the new administrator of the palace has settled in, around 1,000 objects, including paintings, sculptures, icons, furniture, rugs, draperies, dishes, and other decorative items were missing.

"[7]: 138  The majority of the remaining objects were redistributed to various institutions and organizations, including the press arm of the Ministry of Art and Information, the "Bee" Society (Societatea "Albina"), and the restaurant union "Ambasador".

The retrofit was to take place in four stages, during which the building would allocate rooms for a bigger library and centers or workshops for chess, miniature aircraft, automobiles, radiophony, photography, painting, choreography and dance, history, and ceramics.

In 1991 the palace became the headquarters of the Romanian Presidency and the old wing of the ensemble was opened to the public as Cotroceni National Museum, envisioned as an insight into past ages.

Many of the palace's function rooms were decorated to the taste of Marie, the English wife of Carol's heir, his nephew Crown Prince Ferdinand.

Largely kept intact since the 1890s, the Hall of Honour, built in the French style of Napoleon III, boasts an original Italian marble staircase.

Built in 1926 under the guidance of the Czech architect Karel Liman, the Hunting Room showcases some of King Ferdinand's personal trophies.

Built by the architect Grigore Cerchez in the Neo-Romanian style, the Great Hall of Receptions today also functions as a place for specific activities hosted by the museum, such as concerts, book launches or art exhibitions.

The glass collection includes valuable artistic and historical pieces : the table set of Queen Mary (Neo Byzantine style) and Italian and French workshops.